FNUS75 KSLC 221039
FWSSLC

SPOT FORECAST FOR BOULDER HELICOPTER LIFT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
439 AM MDT WED SEP 22 2010

...RED FLAG WARNING FROM 9 AM THIS MORNING TO 9 PM MDT THIS
EVENING FOR THUNDERSTORMS AND GUSTY WINDS...

.DISCUSSION...STORM SYSTEM CURRENTLY OVER CALIFORNIA WILL MAKE ITS
WAY INTO THE STATE THIS AFTERNOON THROUGH EARLY THURSDAY. BREEZY
SOUTHWEST WINDS WILL DEVELOP AGAIN TODAY AHEAD OF THE SYSTEM.
ADDITIONALLY...MOISTURE AND INSTABILITY WILL INCREASE AS THE STORM
APPROACHES...ALLOWING FOR NUMEROUS SHOWERS AND THUNDERSTORMS TO
DEVELOP BY THE LATE MORNING HOURS...PERSISTING INTO THE EARLY
EVENING. HIGH PRESSURE WILL BUILD OVER THE STATE THURSDAY AS THE
SYSTEM EXITS AND SHOULD PERSIST THROUGH THE WEEKEND. THIS WILL
RESULT IN WARMING TEMPERATURES...LIGHT WINDS...AND DRYING
CONDITIONS.

.TODAY...
  LAL.................5.
  HAINES INDEX........3 ..VERY LOW.
  CLEARING INDEX......1000+.
  SKY/WEATHER.........BECOMING MOSTLY CLOUDY (70-80 PERCENT CLOUD COVER).
                      NUMEROUS SHOWERS AND THUNDERSTORMS DEVELOPING BY
                      LATE MORNING.
  MAX TEMPERATURE.....61-65.
  MIN HUMIDITY........44-48 PERCENT.
  WINDS - 20-FOOT.....SOUTH WINDS 10 TO 15 MPH INCREASING TO 20 MPH
                      LATE IN THE AFTERNOON.

.TONIGHT...
  LAL.................3 UNTIL MIDNIGHT...THEN 2.
  HAINES INDEX........4 ..LOW.
  SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT CLOUD COVER). A
                      CHANCE OF SHOWERS AND THUNDERSTORMS UNTIL
                      MIDNIGHT...THEN A SLIGHT CHANCE OF SHOWERS
                      AND THUNDERSTORMS.
  MIN TEMPERATURE.....43-47.
  MAX HUMIDITY........80-84 PERCENT.
  WINDS - 20-FOOT.....SOUTHWEST WINDS 20 MPH BECOMING WEST 5-10 MPH
                      AFTER MIDNIGHT.

.OUTLOOK FOR THURSDAY...
  LAL.................1.
  HAINES INDEX........4 ..LOW.
  CLEARING INDEX......580.
  SKY/WEATHER.........SUNNY (0-5 PERCENT CLOUD COVER).
  MAX TEMPERATURE.....63-68.
  MIN HUMIDITY........22-26 PERCENT.
  WINDS - 20-FOOT.....UPSLOPE/UPVALLEY WINDS 3-7 MPH.



FORECASTER...TRAPHAGAN
REQUESTED BY...CHAD RUNYAN
REASON FOR REQUEST...HAZMAT
.TAG 20100921.BOULD.01/SLC

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